<?php

class views_handler_field_counter extends views_handler_field {

    function option_definition() {
        $options = parent::option_definition();
        $options['counter_start'] = array('default' => 1);
        return $options;
    }

    function options_form(&$form, &$form_state) {
        parent::options_form($form, $form_state);

        $form['counter_start'] = array(
            '#type' => 'textfield',
            '#title' => t('Starting value'),
            '#default_value' => $this->options['counter_start'],
            '#description' => t('Specify the number the counter should start at.'),
            //'#process' => array('views_process_dependency'),
            '#size' => 2,
        );
    }

    function query() {
        // do nothing -- to override the parent query.
    }

    function render($values) {
        // Note:  1 is subtracted from the counter start value below because the
        // counter value is incremented by 1 at the end of this function.
        $count = is_numeric($this->options['counter_start']) ? $this->options['counter_start'] - 1 : 0;
        $pager = $this->view->pager;
        // Get the base count of the pager.
        if ($pager['use_pager']) {
            $count += ($pager['items_per_page'] * $pager['current_page']) + $pager['offset'];
        }
        // Add the counter for the current site.
        $count += $this->view->row_index + 1;

        return $count;
    }

}
